Move test logic for SQLITE_FCNTL_PRAGMA out of os_unix.c and into test_vfs.c.

FossilOrigin-Name: c81fc40b2b584820ac7d1c3848ebeb7225d4eeeb

test/attach.test

@@ -272,17 +272,6 @@ ifcapable schema_pragmas {
 } ;# ifcapable schema_pragmas
 
 
-if {[regexp unix [file_control_vfsname db]]} {
-  ifcapable debug {
-    do_test attach-1.30.1 {
-      file tail [db eval {PRAGMA main.filename}]
-    } {test.db}
-    do_test attach-1.30.2 {
-      db eval {PRAGMA temp.filename}
-    } {}
-  }
-}
-
 ifcapable {trigger} {  # Only do the following tests if triggers are enabled
 do_test attach-2.1 {
   execsql {

test/pragma.test

@@ -1506,6 +1506,9 @@ do_test pragma-19.3 {
 do_test pragma-19.4 {
   catchsql {PRAGMA error=7}
 } {1 {out of memory}}
+do_test pragma-19.5 {
+  file tail [execsql {PRAGMA filename}]
+} {test.db}
 
 
 finish_test